Official forum enigma
Roger that, Chargar. A small thing, but chemical weirdnesses are off-putting. Too many drug labs in my past life, I guess. I have never seen Unique or 2400 cause that in my tools.
The new made Alliant Bullseye is listed at 30-40% nitroglycerin in its composition, and Unique at 20-30% and 2400 at 5-10%. It is the nitroglycerin that dissolves the plastics in powder measures, at a rate dependent upon temperature and humidity. Double based rifle powders tend to have such heavy deterrent coatings, that the powder doesn't etch the plastic. Never a good idea to store powders in anything but the original containers.
357 brass is longer, hence has longer parallel sides and is not wadcutter specific brass. The cannelure means little or nothing.I loaded some 357 yesterday and decided to use the last of the nickle cases I had. Two federals and one ww had cannelures at about the right depth for wcs, those cases had no bulge after seating the bullets. I'm guessing they are wc cases? If so, it would seem odd to have wadcutter factory loads in the magnum as opposed to 38 spl.
Frank, I see your avatar CVA42. I guess I could use RockyCVA11.Funny thing about wadcutter brass. Had a buddy that did concealed carry courses. He used to just sweep up the brass and dump it in a bucket. One day he tells me getting tired of sweeping all that brass and hands me the broom. I reached my saturation point when the 40mm ammo can was full. Mostly all R-P brass and good percentage of it is wadcutter brass. Someday will have to separate the wadcutter brass from the regular brass. Frank
Don't ever buy a tubing micrometer, it will ruin you and drive you crazy. You will discover just how different case thickness can be and how much it can vary in the same case.Thanks, Charles. I guess they just had thinner walls than the others.